Home / 28,357.62-39,132.85-15,782.10

Finding the Fourth Proportional to 28,357.62, 39,132.85 and 15,782.10

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Solution

The fourth proportional to 28,357.62, 39,132.85 and 15,782.10 is: 21,778.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.62 : 39,132.85 = 15,782.10 : x
  2. Step 2: Convert to fraction form
    28,357.62/39,132.85 = 15,782.10/x
  3. Step 3: Cross multiply
    28,357.62x = 39,132.85 × 15,782.10
  4. Step 4: Simplify right side
    28,357.62x = 617,598,551.99
  5. Step 5: Solve for x
    x = 617,598,551.99/28,357.62
  6. Step 6: Final answer
    x = 21,778.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.